Investigation on temporal skewing among O-CDMA code carriers under fiber temperature variations

Experimental investigation has been conducted on the influence of optical fiber temperature variations on Two Dimension Wavelength/Hopping Time/Spreading Incoherent Optical Code Division Multiple Access (2D-WH/TS iOCDMA) codes. Our experimental results show that in the literature reported approaches assuming a temperature induced coefficient Dtemp in optical fiber being a constant are only accurate when the selection of code carriers' wavelengths is from a relatively narrow spectral interval. This paper shows that if the selection of code carriers' wavelengths is from a wider spectral interval, neglecting to mitigate the wavelength dependency of D_temp would have a significant impact on the recovered iOCDMA Autocorrelation function.